My 10yo and best friend have been putting this through the wringer and it is proving to be very durable so far (will update if we have any issues). This is being lugged, transported (often not in the bag though because it has to get folded just right and is hard to finagle in), and bounced on, dragged across the grass, and used as a slip n slide. Got the 16ft length even though the 20ft would be more fun since 16 feet means this could be set up indoors (and it has been) without being completely wall to wall. All pictures they show are misleading to size -- as the girl on it is clearly photoshopped HOWEVER the 2 10 year olds who use this regularly love being able to go down the left and right sides side by side and don't seem to have issue with the actual width.